Typewriting machine



1,495,811 G. A. SEIB TYPEWRITING MACHINE Flled Sept 23 1922 iNVENTUR- 5M Mu #Mms 3M May 27 1924.

WITNESSES Z. Wa mat/Sana +m5ATTnRNEY GEGRGE A. SEIB, 0F ILION, NEW YORK, ASSIGNOR T0 REMINGTON TYPTER comi- PANY, OF ELTON, NEW YORK, A COREORATION OF NEW YORK.

TYPEWRITING MACHINE.

Application filed September 23, W22. serial No. aeaeai.

To all whom it may concern.

Be it known that Lfisonen A.'SEIB, citizen of the United States, and resident of Ill0I1,lI1 the county of Herkimer and State of New York, have invented certain new and useful 1m rovements in Typewriting Machines, of w ich the following is a specification.

My present invention relatesto paper feeding mechanism for typewriting machines, and its main object is to provide a new and improved paper bail which cooperates with the platen of the machine to give better control of the paper at the printing side or face of the platen than do the usual devices employed for the purose. p To the above and other ends which will hereinafter appear my invention consists in the features of construction, combinations of devices and arrangements of parts hereinafter described and. particularly pointed out in the claims.

The usual paper guiding fingers frequently permit a gap to occur between the paper and the platen along the face of the latter between the paper fingers, which are ordinarily arranged near the ends of the platen, and this gap adds to the noise resulting from the striking of the types during printing operations. My improved bail enables paper fingers to be dispensed with and holds the paper tightly and smoothly against the platen through the entire width of the paper in the neighborhood of the printing line, thus reducing noise and facilitating the control of the paper. The said paper hail is conveniently arranged so as not to interfere with the usual opera tions of the machine and a comparatively slight movement communicated to the bail by a finger piece or key clears the printing face of the platen. To relieve the operator from holding the bail away from the platen when inserting the paper, a latch or locking device is provided which operates automatically through the force of gravity to hold the bail in released or.

illustrated in the accompanying drawings wherein- Figure l is a fragmentary perspective view of the platenframe or carrier and platen of a typewriting machine and showing myinvention associated therewith.

Figure 2 is an end view, partly in section, of said platen frame and platen.

Figure 3 is a view corresponding to Figure 2 but showing the paper bail in released or locked-01f position.

Figure 4 is a fragmentary sectional view of a detail.

The platen frame or carrier of the machine comprises parallel and bars 1 and a connecting cross bar 2, the platen 3 being rotatably mounted on the end bars 1. The platen and platen frame illustrated correspond generally with those found in the No. lORemington typew'riting machine and therefore need not be further described. (Io-operative with the platen at its under side are the usual main and secondary feed.

rollers numbered respectively 4 and 5 as well as the paper deflector or apron, which latter, however, has been omitted from the drawing for the sake of clearness.

My improved paper bail comprises a rod or rock shaft 6 which is arranged at the front side of the platen and extends lengthwise thereof below the printing line, said.

rock shaft bcing'rotatably supported at its ends on the'end bars 1. As best illustrated in Fig. 4, the rock shaft is reduced in diameter at each end, as indicated at 7, and the reduced ends 7 are first threaded and then the threaded portions are flattened at opposite sides as at 8. The smooth portions of the reduced ends 7 bear in bushings 9 which are threaded into openings in the end bars 1, the bushings having hexagonal flanges or heads 10. which are disposed outside the end bars. These heads enable the bushings; to be readily threaded into place and also clamp them against the end bars. The reduced ends 7 pass through and bear in the bushings. and the shoulders formed between the ends 7 and the body portion of the rock shaft 6 abut against the inner ends of the bushings and prevent undue endwise movement of the rock shaft 6 but without interfering with its rotary movements. The bail further comprises parallel arms 11 provided with hubs 12' which fit over the rock shaft 6 near its ends and are suitably fixed thereto. The

arms 11 are curved forward or outward preferably and extend upward to a point slightly above the top of the platen. The end portions of the arms 11 are perforated to provide bearings for the reduced ends 13 of a cross rod or shaft 14 on which are mounted pressure rolls 15. These pressure rolls are slidably adjustable along the rod 14 but turn together with the rod during paper feeding operations. The rollers or devices 15 00-0 erate with the platen at its front upper si e, and are so proportioned as to maintain the paper in a smooth and taut condition. the present instance but the number may be varied as found desirable. The rollers are maintained in cooperative spring pressed relationship with {the platen by spring mechanism comprising a pair of wire springs 16, one arranged outside of each end bar 1. At the rear each spring is wound around or fits over a pin 17 projecting outward fromthe end bar 1, the end portion of the spring being secured to the end bar by a headed screw 18. The springs project forward and their free ends co-operate with arms 19 which are mounted on the rock shaft 6 and project rearward therefrom. The front end of each arm 19 is formed with a slot or opening 20 having two parallel straight sides which enable the arm 19 to be fitted over the flattened sides 8 of the rock shaft 6, the arm 19 being secured in place by a nut 21 which is threaded on the outer end of the rock shaft and secures the arm 19 against the shoulder formed between the flattened faces 8 and the outer end of the part 7. The construction is such that the arms 19 are held in rigid relationship with the rock shaft 6 and are in effect crank arms projecting rearwardly therefrom. The rear end of each arm 19 is inwardly bent to provide a Ii 19, the top of which may be notched slig tly to provide aseat for the free end of the associate spring 16. The springs 16 tend constantly to press downward. acting through the arms 19, rock shaft 6 and arms 11 to press the rod or shaft 14 towards the platen and maintain the rollers 15 normally in operative engagement therewith. It will be understood that the paper 22 after passing around the platen between it and the pressure rolls 4 and 5 andupward at the front side thereof, is led under the rollers 15 after it passes the printing line, and throughout its .width is held close or tight against the platen by the bail.

In order conveniently to control the paper bail, a key device or finger piece is preferably provided for overcoming the springs 16 and rocking the bail forward. Said finger piece may comprise an arm 23 terminating at its upper end in a laterally bent finger portion or key proper 24, the arm 23 being preferably secured to the outer face Two rollers are shown in of the left-hand arm, 11 as by screws 25. Downward pressure applied to the key 24 will rock the bail forward on the axis 6 from the Fig. 2 to the Fig. 3 position. In the latter position it will be observed that the rollers 15 clear the platen or are separated a suilicient distance from it to enable the paper readily to pass upward and rearward over the platen, and to be drawn forward for erasing or other purposes.

Locking means are provlded to maintain the bail in the released or Fig. 3 position, said means operating automatically and comprising a latch or arm 26 which is provided with an elongated slot indicated at 27, said slot terminating at its rear in an up-turned or angularly disposed end portion 28, having at its front side a notch or seat 29. The arm 26 is horizontally disposed and at its front end terminates in a laterally bent finger portion or key 30. The front end portion of the arm 'is mounted or supported on the bail while the rear end portion is mounted or supported on the platen frame or carrier, the arm roviding a constant connection between t e bail and the platen frame. A headed pivot pin 31 rotatably connects the arm 26 with the upper end portion of the ,arm 23, while the slot 27 is adapted to receive a headed screw pivot 32 which is threaded into the up er end portion 33 of the bearing 'plate 34 which is secured by screws 35 to the inner face of the left-hand end bar 1, the portion 33 rojecting above the top portion of the end ar. The weight of the arm 26 is mainly in rear of its pivotal connection 31 with the bailso that gravity tends to swing this rear portion of the arm constantly downward, maintaining the top edge of the slot 27 normally in contact with the shank of the screw 32, as illustrated in- Fig.2. When the key 24 is actuated to release or throw off the bail the arm 26 will move forward supported on the pin 32, the upper edge on wall of the slot 27 sliding along said pin until the rear portion 28 of the slot is reached, when the arm 26 will drop downward through the force of gravity until arrested by the end or top of the slot. If now the finger piece 24 is released the springs 16 will carry the bail slightly rearward, causing the notch 29 to engage or inter-seat with the shank of the screw pin 32. As illustrated in Fig. 3 the construction is such that the bail is thus not only automatically locked off but the latch or arm 26 is held firmly and prevented from rattling. After the paper has been adjusted, the key 30 may be depressed to lift the latch or arm 26, swinging its rear portion upward upon the pivotal axis 31, enabling the springs 16 to restore the bail to operative engagement with the platen and the paper thereon. The keys 24 and 30 are arranged in proximity to each other and may be readily man p l te y the left-hand. of the operator.

The 'slot- 27 is of such length that its front end never contacts with the shank of the screw pivot 32 so that the spring pressed engagement. of the rollers 15 with the platen 3 is not interfered with. Forward swing of the bail and rollers away from the platen is, however, limited by the rear end portion 28 of the slot engaging with the shank of the screw pivot 32. p

it will be observed that by the present invention there is provided a bail or paper feeding device which normally co-operates with the platen, said bail being associated with a gravity operated lock which is effective to retain it in inoperative position, the lock acting automatically as the pa er feeding device or bail is moved away rom the platen: that the lock or latch mounted on.

the bail, being pivotally supported at its front end by'one of the side arms thereof; and that said latch, arm or device is constantly connectedwith the platen carrier through a variable or pin-and-slot connection, said arm being in effect a link which connects the bail with the platen carrier and limits the movement of the bail away from the platen. roviding a constant connection between the liail and the platen carrier.

Various changes may be made without departing from my invention.

What I claim and desire to secure by Letters Patent, is

1. In a typewriting machine, the combination of a platen, a paper feedlng device normally co-cperative therewith, and a gravity operated lock constantly connected to and partly supported bysaid device, said lock being etiective to retain said device in,

inoperative position.

2. In a typewriting machine,t-he combination of a platen, a paper bail, and a lock automatically operating through the force of gravity as-said bail is moved away from said platen, said lock holding said bail in inoperative position and being constantly connected to and partly supported by said bail. v

3. In a typewriting machine. the combination of a platen. a aper bail, a latch having a support on said bail and operative automaticall to retain it in locked-oft position, and a finger piece separate from said latch for releasing said bail.

4. In a typewriting machine, the combination of a platen. a paper ball. a latch pivoted to said bail and operated by gravity to retain said bail in locked-oil position, and a finger piece separate from said latch for moving said bail to released position.

5. In a typewriting machine, the combination of a platen carrier, a platen thereon, a paper bail pivoted on said platen carrier and co-operative with said platen, a ball latch having a support on said bail, and a device on said platen carrier with which said latch is constantly connected, said device co-operating with said latch to 'lock said bail away from the platen.

6. In a typewriting machine, the combination of a platen carrier, at platen thereon, a paper hail pivoted on said platen carrier and co-operative with said platen, a bail latch having a support on said bail and connecting said bail with said platen carrier, said latch limiting the movement of said bail away from said platen.

7. In a typewriting machine. the combination of a platen carrier, at platen thereon, a swinging paper bail, supports for said bail on said platen carrier, and a constant connection independent of said supports between said bail and said platen carrier whereby the swinging movement of said nail is limited.

8. In a typewriting machine, the combination of a platen carrier, a platen thereon, a paper bail pivoted on said platen carrier, a latch connected to said bail, and r a pin and slot connection between said latch and said platen carrier whereby said latch is efiective to limit the movement of said bail away from said platen carrier.

.9. In a typewriting machine, the combi nation of a platen, a paper bail, and looking devices for retaining said bail in inoperative position, said devices comprising a stationary projection and an arm ivoted to said bail and provided with a coking notch co-operative with said projection.

10. In a typewriting machine, the combination of a platen carrier, a platen thereon, a key controlled paper bail, spring means tending'constantly to maintain said bail in co-operative relationship with the platen, and a key controlled latch for said bail, said latch being mounted on said ball, the key of said bail and the key of said latch being independently operative.

11. In a typewriting machine, the combination of a platen carrier, a platen, a paper bail pivoted on said platen carrier and provided with a key by which it may be swung on its pivots into and out of operative position, a latch pivoted to said bail and efiective to retain it in locked-oil position, and a key for unlocking said latch.

12. In a typcwriting machine, the combination of a platen, a paper bail, a latch pivoted to said bail and operative by gravity to retain saidbail in locked-oil position, and separate keys one for said bail and one for said latch.

13. In a typewriting machine, the combination of a platen, a paper bail. a latch having a support on said bail and operating automatically to lock said bail away from the platen, akey for throwing 03 said paper bail and another key for unlocking said latch, both of said keys being on said paper bail and arranged in proximity to each other.

14. In a typewriting machine, the combination of a platen carrier; a platen there on; a paper bail comprising a rock shaft pivoted on said platen carrier, arms on said rock shaft, across rod connecting said arms and pressure rollers on said cross rod; and spring means for normally pressing said bail towards the platen, said spring means comprising wire springs arranged at each end of said platen carrier and effective on crank arms fixed to said rock shaft.

15. In a typewriting machine, the combination of a platen carrier, a platen thereon, a paper bail comprising a rock shaft pivoted on said platen carrier, and a pressure roll supported from said rock shaft, crank arms fixed to the ends of said rock shaft, and wire springs, each spring having one of its ends fixed to the platen carrier and having its free end constantly reacting against one of said crank arms.

16. In a typewriting machine, the combiassen nation of a platen carrier, a platen there on, and a paper bail comprising a rock shaft v pivoted on said platen carrier, arms on said rock shaft, a cross rod connectin said arms, pressure rollers on said cross ro and a key connected to one of said arms.

17. In a typewriting machine, the combination of a platen carrier; a platen thereon; a paper -bail comprising a rock shaft pivoted on said platen carrier, parallel arms on said rock shaft, across rod connecting said arms, pressure rollers on said cross rod, and a key connected to one of said arms; a slotted locking arm provided with a key and pivoted on one of said parallel arms; and a device on said platen carrier co-operative with said slotted arm.

Signed at Ilion, in the county of Herkimer, and State of New York, this 21st day of September, A. D. 1922.

GEORGE A. SEIB. Witnesses:

LINNIE F. BURNETT, E. S. Donor. 

